CR123A batteries from EVE, aka CR17335 are still readily available. Due to a shortage of electrolyte, these are scarce in the market. However, due to a different design of an organic solvent with lithium salt, EVE is much less affected by this.
These primary 3V Lithium Manganese Dioxide batteries with a nominal capacity of 1400mAh are used in AEDs, among others, because the pulse capacity of 1A is particularly good compared to other primary batteries.
Temperature specifications are also excellent at -40~70℃.
EVE is the world's largest manufacturer of primary batteries. With UL1642 certification, in addition to quality, safety is at the highest level.